纳米SnO2光催化剂的制备及其在养殖废水处理中的应用

doi:10.3969/j.issn.1001-909X.2015.02.009

海洋学研究 ›› 2015, Vol. 33 ›› Issue (2): 64-69.DOI: 10.3969/j.issn.1001-909X.2015.02.009

纳米SnO₂光催化剂的制备及其在养殖废水处理中的应用

金晓杰, 于晓彩^*, 吴云英, 尚晓琳, 尹丹妮, 薛冠华

大连海洋大学海洋科技与环境学院, 辽宁大连 116023

收稿日期:2014-11-06 修回日期:2015-03-17 出版日期:2015-06-15 发布日期:2022-11-25
通讯作者: *于晓彩(1964-),女,教授,主要从事污染控制化学的教学与研究。E-mail:xiaocyu@dlou.edu.cn
作者简介:金晓杰(1989-),女,河北张家口市人,主要从事海水光催化净化方面的研究。E-mail:1271085337@qq.com
基金资助:
国家海洋公益性行业科研专项经费项目资助(20130500);辽宁省科技厅工业企业科技特派员项目资助(20130106);辽宁省海洋与渔业厅科研项目资助(2011024)

Preparation of nano-SnO₂ photocatalyst and its photocatalytic oxidation application in aquaculture wastewater

JIN Xiao-jie, YU Xiao-cai^*, WU Yun-ying, SHANG Xiao-lin, YIN Dan-ni, XUE Guan-hua

College of Ocean Technique and Environment Department, Dalian Ocean University, Dalian 116023, China

Received:2014-11-06 Revised:2015-03-17 Online:2015-06-15 Published:2022-11-25

摘要/Abstract

摘要： 以五水合四氯化锡为原料,采用化学沉淀法制备了纳米SnO₂光催化剂,采用电子显微镜和X光衍射仪对粉体的粒径、物象和形貌等进行了表征,对比分析了自制纳米SnO₂对于养殖废水中氨氮的光催化降解情况。研究结果表明催化剂投加量、废水中氨氮初始质量浓度、溶液pH值和H₂O₂质量浓度均是影响氨氮催化氧化去除效果的重要因素。通过正交实验确定了SnO₂光催化剂氧化的优化反应条件:SnO₂投加量为1.2 g/L,氨氮初始质量浓度为40 mg/L,pH值为8.0,H₂O₂质量浓度为1.0 g/L,催化时间为2 h时,去除率可达72%。

关键词: 水产养殖废水, 纳米SnO₂, 光催化氧化, 氨氮

Abstract: Nano-SnO₂ photocatalyst was obtained by the chemical precipitation method with SnCl₄·5H₂O as the raw material. The particle size of powders, object and morphology have been characterized using the X-ray diffraction and electron microscope. The photocatalytic degradation of ammonia nitrogen in aquaculture wastewater was investigated by using our home-made nano-SnO₂. The effects of different degradation variables on the degradation efficiency were investigated, and the results show that nano-SnO₂ catalyst dosage, the initial mass concentration of ammonia-N in wastewater, pH value, the mass concentration of H₂O₂ are the main effect factors. The optimum reaction conditions are as follows: nano-SnO₂catalyst dosage is 1.2 g/L, the initial concentration of ammonia-N is 20 mg/L, pH value is 8.0, reaction time is 2 hours and H₂O₂ concentration is 1.0 g/L. Under such condition, the removal rate of ammonia-N can nearly reach 72%.

Key words: aquaculture wastewater, nano-SnO₂, photocatalytic oxidation, ammonia nitrogen

中图分类号:

O643
X703

金晓杰, 于晓彩, 吴云英, 尚晓琳, 尹丹妮, 薛冠华. 纳米SnO₂光催化剂的制备及其在养殖废水处理中的应用[J]. 海洋学研究, 2015, 33(2): 64-69.

JIN Xiao-jie, YU Xiao-cai, WU Yun-ying, SHANG Xiao-lin, YIN Dan-ni, XUE Guan-hua. Preparation of nano-SnO₂ photocatalyst and its photocatalytic oxidation application in aquaculture wastewater[J]. Journal of Marine Sciences, 2015, 33(2): 64-69.

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纳米SnO₂光催化剂的制备及其在养殖废水处理中的应用

Preparation of nano-SnO₂ photocatalyst and its photocatalytic oxidation application in aquaculture wastewater

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